S.T
5/9/2008

Investigation 1 Essential Question: What are some variables around us?

Big Idea: Observation and description of changes in the world around us are the first steps in finding and learning about patterns.




1.1 & Follow Up


Prepare a table for recording the total number of jumping jacks after every 10 seconds, up to a total time of 2 minutes (120 seconds).

Ans
Time (seconds)
Number of Jumping Jacks
0
0
10
11
20
22
30
34
40
45
50
58
60
70
70
81
80
95
90
109
100
118
110
129
120
141

F.U

1. How did your jumping jack rate (the number of jumping jacks per 10 seconds) change as time passed? How is this shown in your table?

Ans. This person’s speed always stayed above 10 jumping jacks per 10 seconds. The no. of jumping jacks never went below 10 in the 10 seconds. This person’s stamina was really good. This is shown in the table that in every 10 seconds the no. of jumping jacks are greater than the seconds.

2. What might this pattern suggest about how bike-riding speed would change over a day’s time on the bicycle tour?

Ans. This person has a lot of stamina, so I think that he would stay steady like he did in the experiment with the jumping
jacks. He would slow down but not that much, because the cycling tour is much longer than 120 seconds of jumping jacks he starts of really slow and keeps on going really slow then wouldn't get tired, but it would effect his speed.